ChatGPT 4 is the advanced version of ChatGPT that cost $20USD/monthly. It is smarter but slightly slower due to the massive training data it has compared to ChatGPT3.5.
ChatGPT API is the one required to work outside OpenAi with the external software - The Engine for our Groove Ai Content CoPilot.
Disclosure: We're in this as Independent Groove Affiliates, not staffers. If you take our advice and journey with Groove, a referral bonus may come our way. But let's talk heart-to-heart: these thoughts are entirely ours, no corporate scripts. GrooveAi? It's a new face around here, and like you, we're diving in headfirst. Our compass is set to honesty – we share only what we'd genuinely embrace ourselves. In other words, we only promote what we bought or use ourselves, unless clearly stated otherwise, which would be a very rare case... (Generated and finetuned with ChatGPT, our current Ai Content CoPilot 🛫)